Emerald Ash Borer

County	State Name	Year Detected
Rutland	Vermont	2020
Chittenden	Vermont	2020
Carver	Minnesota	2020
Somerset	Maryland	2020
Mills	Iowa	2020
Shelby	Iowa	2020
St. Clair	Illinois	2020
Hall	Nebraska	2020
Price	Wisconsin	2020

County

State Name

Province Name

Year Detected

Rutland

Vermont

2020

Chittenden

Vermont

2020

Carver

Minnesota

2020

Somerset

Maryland

2020

Mills

Iowa

2020

Shelby

Iowa

2020

St. Clair

Illinois

2020

Hall

Nebraska

2020

Price

Wisconsin

2020

EAB University Announcement

Heard about the new invasive tick? Worried about that dead ash tree in your yard? Learn about how to deal with these and many other problems in EABU's 2020 fall webinar series on invasive species.
All webinars are free and many can be used towards continuing education programs (contact Elizabeth Barnes for details).
Can’t watch it live? No problem!
All webinars are recorded and posted online after the talks.
To register go to this link.

As of November 1^st, 2020
Click to enlarge

Changes/additions included since October 1^st 2020:

Initial county detections in:
Hall County, NE
St. Clair County, IL
Mills and Shelby Counties, IA
Somerset County, MD
Carver County, MN
Chittenden and Rutland County, VT

Added to the list of counties quarantined by their state:
Carver and Sibley Counties, MN

Emerald Ash Borer

Emerald ash borer (EAB), Agrilus planipennis Fairmaire, is an exotic beetle that was discovered in southeastern Michigan near Detroit in the summer of 2002. The adult beetles nibble on ash foliage but cause little damage. The larvae (the immature stage) feed on the inner bark of ash trees, disrupting the tree's ability to transport water and nutrients. Emerald ash borer probably arrived in the United States on solid wood packing material carried in cargo ships or airplanes originating in its native Asia. As of October 2018, it is now found in 35 states, and the Canadian provinces of Ontario, Quebec, New Brunswick, Nova Scotia and Manitoba.

Since its discovery, EAB has:

Killed hundreds of millions of ash trees in North America.

Caused regulatory agencies and the USDA to enforce quarantines and fines to prevent potentially infested ash trees, logs or hardwood firewood from moving out of areas where EAB occurs.

Cost municipalities, property owners, nursery operators and forest products industries hundreds of millions of dollars.

Important Information

Insecticide Options for Protecting Ash Trees
April 2019 - Third Edition

Insecticide Options for Protecting Ash Trees cover

Tree Care Specialists - Arborists - Homeowners

This bulletin answers your questions about, and offers insecticide options for controlling EAB.

Open Document

Coalition for Urban Ash Tree Conservation EAB Management Statement

This endorses ash tree conservation in urban areas as part of an integrated EAB management program. It is supported by university scientists, commercial arborists, municipal foresters, public works officials, and non-governmental organizations (NGOs).

English French

Additional Letters of Support

Nature Conservancy Support Canadian Support

What To Know About EAB

Adult Beetles are metallic green and about 1/2-inch long.

It attacks only ash trees (Fraxinus spp.)

Adults leave a D-shaped exit hole in the bark when they emerge in spring.

Woodpeckers like EAB larvae; heavy woodpecker damage on ash trees may be a sign of infestation.

Firewood cannot be moved in many areas because of the EAB quarantine.

It probably came from Asia in wood packing material.

News & Information

Get the most current information about emerald ash borer from our popular EAB University webinars or follow us on Twitter for the latest news about EAB.